the WEIHRAUCH 1/2 FLAT END CAP its allow you to connect any standard 1/2 UNF male.
this end cap will fit to all the standard weihrauch moderator its design with flat end cap to be match when fitted on bulpup or end of the shroud.
this item will not fit to HW-79
this unit comes with self tightening tools no any other tools required to fix it.
will fit to 177, 22 and 25 caliber.